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How to Fix a Key Fob That isn't Working

If your key fob isn't functioning, a few easy steps can fix it. First, ensure that it's not your backup remote.

If your backup remote can unlock and lock the doors of your car, then it is most likely that the primary remote isn't functioning. Most car remote key failures are caused by battery or circuitry problems.

Battery

It is not uncommon to find a battery on the car key fob to degrade. It is relatively easy to replace the battery, however it is important to make sure that you choose the correct type that you can refer to the owner's manual or talk to the dealer for the manufacturer to find out the kind of battery you need. It is also important to inspect the battery compartment, since dead batteries can leak toxic chemicals that could damage the Remote Key Repair. If replacing the battery does not solve the issue there could be other issues that require attention from a professional. If the buttons are damaged or stuck, for example, it may be necessary remove the remote and rebuild each component. It is also possible to reprogramme the vehicle to recognize the new remote.

Buttons

mobile key repair near me fobs can become filthy and worn out due to repeated use. This is not unusual however it can cause buttons to stop working or require a very hard press for them to function. This can be a hassle particularly when you're away from home and have to switch on your car. Fortunately, even worn out or malfunctioning buttons can often be fixed with a little time and a few items you have in the home.

First, check that the batteries are properly placed and that the indentation at the back of the button has been filled. Then, open the remote with care and look over the circuit board. Check for indications of rust or other indications that the buttons have been damaged or worn out. For instance, conductive paint may be missing. Use the Q-tip, dipped in alcohol to gently clean any membrane contacts that have damaged or where conductive paint is missing. Avoid rubbing too hard, as this can erode the conductive paint and block the button firing when pressed.

Also, carefully check the battery connector's terminals to ensure any loose solder connections. Soldering them back into place will restore the button's functionality If this is the case. The same process can be used to restore function to any loose connections in the fob.

If any of the rubber buttons at the front of the keyfob aren't working or need to be press extremely hard, remote Key repair the graphite disks at the back of the button might have worn out and require replacement. This can be done by rubbing a pencil across the disks, which should bring the button back to working.

If none of these solutions work or you not be able to get the button respond when pressed hard, it is possible that the circuitry is failing. It is possible to fix the issue by cleaning and re-soldering the fob, but you should have another spare in case it doesn't work.

Circuitry

If the keys fob buttons are functioning the circuit board that is inside your remote might be dirty. A very thorough inspection is often enough to resolve this problem. The most common causes of dirty circuit boards are water and broken cases. A damaged case allows water and other debris to get in and short circuit the electronic components. Water can also damage pins and vias, which are small connectors on the board.

If you're able to open your key fob, and you're not afraid of a little mess, we can take off the buttons and solder new ones in their place. It's also worth looking at the battery terminal connections. They can become extremely filthy and if they're not tight enough, the buttons might not work or even stay in their down position. Soldering the terminals and buttons back in their place is generally all that's required to return the key fob that is not working to working condition.

Non-Remote Transponder Chips

Sealed non-remote transponder chips are much more durable than remote fobs that have them but they can still be broken by a hole being made in them or pushed over by a lawnmower or door handle for a car. The majority of non-remote transponder chips fail, and this can be blamed on a blown fuse.

If you're handy enough to open the sealed key fob and are willing to put up with the mess, you can easily remove the circuit board and examine the fuse using an instrument to verify diode function. If you're not confident doing this, head to your local hardware store or Oreilly's, and they will usually have a RF frequency tester that will let you know if the key fob is sending a signal.

Programming

Key fobs endure many abuses and aren't completely indestructible. They can lose their pairing to the car's receiver due to shock or a low battery, which requires them to be reprogrammed. A professional auto locksmith or main dealer will be able to reprogram your key fob and get it back up and running. If resetting or replacing your key fob fails it may be necessary to replace it.